Sharp LC-32GA3E, LC-37GA3E Schematic

LC-32GA3E
LC-37GA3E

SYSTEM BLOCK DIAGRAM

H

G

F

LC-32GA3E
LC-37GA3E

E

D

C

B

A

48

87109654321

49

1716 19181514131211

LC-32GA3E
LC-37GA3E

AV BLOCK DIAGRAM

H

G

F

LC-32GA3E
LC-37GA3E

E

D

C

B

A

50

87109654321

51

1716 19181514131211

LC-32GA3E
LC-37GA3E

MAIN BLOCK DIAGRAM

H

G

F

LC-32GA3E
LC-37GA3E

E

D

C

B

A

52

87109654321

53

1716 19181514131211

LC-32GA3E
LC-37GA3E

CPU BLOCK DIAGRAM

H

G

F

LC-32GA3E
LC-37GA3E

E

D

C

B

A

54

87109654321

55

1716 19181514131211

LC-32GA3E
LC-37GA3E

DISPLAY BLOCK DIAGRAM

H

G

F

LC-32GA3E
LC-37GA3E

E

D

C

B

A

56

87109654321

57

1716 19181514131211

LC-32GA3E
LC-37GA3E

POWER BLOCK DIAGRAM

H

G

F

LC-32GA3E
LC-37GA3E

E

D

C

B

A

58

87109654321

59

1716 19181514131211

LC-32GA3E
LC-37GA3E

OVERALL WIRING DIAGRAM (LC-32GA3E)

H

G

F

LC-32GA3E
LC-37GA3E

E

D

C

B

A

60

87109654321

61

1716 19181514131211

LC-32GA3E
LC-37GA3E

OVERALL WIRING DIAGRAM (LC-37GA3E)

H

G

F

LC-32GA3E
LC-37GA3E

E

D

C

B

A

62

87109654321

63

1716 19181514131211

1

1

Ë

CPU Unit-1/5

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D33 D34

1

1

Ë

CPU Unit-2/5

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D35 D36

1

1

Ë

CPU Unit-3/5

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D37 D38

1

1

Ë

CPU Unit-4/5

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D39 D40

1

1

Ë

CPU Unit-5/5

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D41 D42

1

1

Ë

LCD CONTROL Unit-1/8

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D17 D18

1

1

Ë

LCD CONTROL Unit-2/8

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D19 D20

1

1

Ë

LCD CONTROL Unit-3/8

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D21 D22

1

1

Ë

LCD CONTROL Unit-4/8

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D23 D24

1

1

Ë

LCD CONTROL Unit-5/8

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D25 D26

1

1

Ë

LCD CONTROL Unit-6/8

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D27 D28

1

1

Ë

LCD CONTROL Unit-7/8

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D29 D30

1

1

Ë

LCD CONTROL Unit-8/8

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D31 D32

1

1

Ë

DVI Unit-1/2

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D71 D72

1

1

Ë

DVI Unit-2/2

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D73 D74

Ë

KEY Unit

Ë

R/C, LED Unit

H

G

F

E

H

G

F

E

D

C

B

A

D

C

B

A

654321

D13 D14

654321

Ë

EXT, SP, TERMINAL Unit

H

G

F

E

H

G

F

E

D

C

B

A

D

C

B

A

D89

654321

654321

1

1

Ë

AV Unit-1/5

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D4D3

1

Ë

AV Unit-2/5

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D5 D6

1

Ë

AV Unit-3/5

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D7 D8

1

Ë

AV Unit-4/5

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D9 D10

1

Ë

AV Unit-5/5

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D11 D12

1

Ë

FRONT Unit

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D15 D16

1

Ë

MAIN Unit-1/14

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D43 D44

1

Ë

MAIN Unit-2/14

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D45 D46

1

Ë

MAIN Unit-3/14

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D47 D48

1

Ë

MAIN Unit-4/14

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D49 D50

1

Ë

MAIN Unit-5/14

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D51 D52

1

Ë

MAIN Unit-6/14

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D53 D54

1

Ë

MAIN Unit-7/14

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D55 D56

1

Ë

MAIN Unit-8/14

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D57 D58

1

Ë

MAIN Unit-9/14

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D59 D60

1

Ë

MAIN Unit-10/14

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D61 D62

1

Ë

MAIN Unit-11/14

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D63 D64

1

Ë

MAIN Unit-12/14

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D65 D66

1

Ë

MAIN Unit-13/14

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D67 D68

1

Ë

MAIN Unit-14/14

H

G

F

E

D

C

B

A

87

109654321

11312 1514 1716 1918 2120

D69 D70

1

Ë

INVERTER-A Unit (LC-37GA3E)

H

G

F

E

D

C

B

A

P7505

B3PS-VH

LUG7502

SD01138-21

LUG7501

SD01138-21

B12B-PASK-1

12PL-FJ

1

2

3

P7506

1

2

3

4

5

6

7

8

9

10

11

12

P7507

1

2

3

4

5

6

7

8

9

10

11

12

Vin

N.C

GND

R7546

N.M
R7547

N.M

S GND

STB

OFL1

OFL2

INV OSC

INV ERR

REG1

IS1-1

IS1-2

REG2

IS2-1

IS2-2

GND

+B5-12V

S GND

STB

OFL2

INV OSC

INV ERR

SRT

SS

REG2

IS2-1

IS2-2

SD01138-21

LUG7503

R7569

N.M

C7566

0.01uF 50V

R7543

0

R7545

0

R7570
N.M

H-0017-2

LUG7504
SD01138-21

R7549

0 (3225)

R7544
N.M

FH7502

R7533

1K F

U.CODE RUNTKA080WJZZ

F7501

FH7501

1SS355

D7523

5

6

C7552

N.M

C7551
N.M

1

2

H-0017-2

R7555
51k F

R7513
47K F

Q7511

UM6K1N

R7532
N.M

R7531

N.M

R7537

1.1K F

R7525
0

R7536

1.1K F

TLC 10A 250V

R7548

0 (3225)

R7539

51kF

3

4

R7522

N.M

R7521

75KF

C7567
N.M

R7517

R7524

N.M

C7545
N.M

100K F

100K F

R7530

R7538
N.M

100 F

R7556
75KF

R7523

R7541

N.M

R7512

36k
F

C7548

N.M

R7509

R7510

R7511

C7544

330p CH

4700pF/50V

C7547

2200pF

4700pF/50V

C7550

2200pF

R7540

0

R7516

0

68K F

68K F

1K F

C7546

C7549

IC7502

BA00ASFP

R7529

100

R7520

N.M

BD9766FV

IC7501

DUTY

BRT

BCT

RDIS

RT

SRT

CT

GND

FB1

IS1

VS1

FB2

IS2

VS2

4

5

3

VCC

P1

N1

PGND

N2

P2

SCP2

SCP1

SS

REG

COMP2

COMP1

STB

FAIL

D7521

R7507

10K F

HZU5.1B

C7534

C7535

C7537

C7555

C7538

C7533

0.047uF 16V

330uF 25V KZE

330uF 25V KZE

D7522

HZU5.1B

C7536

0.047uF 16V

330uF 25V KZE

330uF 25V

KZE

330uF 25V

KZE

R7515

C7540

C7541

C7542

C7543

R7527

R7528

100 F

100

6.8K F

R7514

2.2K F

C7539

4.7u 25V
(3216)

2.2u 10V

2.2u 10V

0.22u 16V

0.1u 16V

10K F

10K F

R7518

R7519

(2125)

(2125)

0

0

R7535
N.M

R7557

12

0
(1608)

R7558
N.M

R7534

R7526

R7560

(3216)

R7508

10K F

R7564

(3216)

RSS075P03

R7559

0

(3216)

0

RSS100N03

RSS075P03

R7561

0

(3216)

R7562

0

(3216)

RSS100N03

R7563

0

(3216)

0

RSS100N03

RSS075P03

R7565

0

(3216)

R7566

0

(3216)

RSS100N03

RSS075P03

R7567

0

(3216)

R7568

0

(3216)

RSS100N03

1,2,3

Q7501

4

5,6,7,8

5,6,7,8

Q7506

4

1,2,3

1,2,3

Q7502

4

5,6,7,8

5,6,7,8

Q7507

4

1,2,3

RSS075P03

1,2,3

Q7503

4

5,6,7,8

5,6,7,8

Q7508

4

1,2,3

RB070M30

1,2,3

Q7504

4

5,6,7,8

5,6,7,8

Q7509

4

1,2,3

1,2,3

Q7505

4

5,6,7,8

5,6,7,8

Q7510

4

1,2,3

RB070M30

RB070M30

D7511

D7512

RB070M30

RB070M30

D7513

D7514

RB070M30

RB070M30

D7515

D7516

RB070M30

D7517

D7518

RB070M30

RB070M30

D7519

D7520

4.7u 25V
(3216)

C7523

C7524

4.7u 25V
(3216)

4.7u 25V

(3216)
C7525

C7526

4.7u 25V

(3216)

4.7u 25V

(3216)
C7527

C7528

4.7u 25V
(3216)

4.7u 25V

(3216)
C7529

C7530

4.7u 25V
(3216)

4.7u 25V

(3216)
C7531

C7532

4.7u 25V
(3216)

5,6,7,8

1,2,3,4

BLCP4220

5,6,7,8

1,2,3,4

BLCP4220

5,6,7,8

1,2,3,4

BLCP4220

5,6,7,8

1,2,3,4

BLCP4220

5,6,7,8

1,2,3,4

BLCP4220

T7501

T7502

T7503

T7504

T7505

C7503

C7504

C7505

C7508

C7509

C7512

C7513

C7516

C7517

C7520

C7521

0.022uF 25V

12pF 5kV

(ECC)

12pF 5kV

(ECC)

C7506

0.022uF 25V

C7507

0.022uF 25V

12pF 5kV

(ECC)

12pF 5kV

(ECC)

C7510

0.022uF 25V

C7511

0.022uF 25V

12pF 5kV

(ECC)

12pF 5kV

(ECC)

C7514

0.022uF 25V

C7515

0.022uF 25V

12pF 5kV

(ECC)

12pF 5kV
(ECC)

C7518

0.022uF 25V

C7519

0.022uF 25V

12pF 5kV

(ECC)

12pF 5kV

(ECC)

C7522

0.022uF 25V

9

12

13

16

9

12

13

16

9

12

13

16

9

12

13

16

9

12

13

16

R7505

0

R7506

0

C7502

D7501

DAN217U

D7502

DAN217U

D7503

DAN217U

D7504

DAN217U

C7501
N.M

D7505

DAN217U

D7506

DAN217U

D7507

DAN217U

D7508

DAN217U

D7509

DAN217U

D7510

DAN217U

N.M

R7501
33K F

R7502
68K F

R7503
33K F

R7504
68K F

P7501

1

3

1717823-1

P7502

1

3

1717823-1

P7503

1

3

1717823-1

P7504

1

3

1717823-1

P7508

1

3

1717823-1

87

109654321

11312 1514 1716 1918 2120

D83 D84

1

Ë

INVERTER-B Unit (LC-37GA3E)

U.CODE RUNTKA081WJZZ

FH7401

H-0017-2

R7429

1K F

F7401

TLC 10A 250V

1SS355

D7415

FH7402
H-0017-2

(3225)

R7445
0

4

5

IC7403

3

12

N.M

R7446

N.M

R7447

N.M

R7448

N.M

R7449

N.M

C7423

C7408

B2PS-VH

LUG7402
SD01138-21

LUG7401

SD01138-21

LUG7403

SD01138-21

P7404

1

2

Vin

GND

R7424

N.M
R7437

N.M

R7458

N.M

H

G

F

D7414

HZU5.1B

C7422

0.047uF 16V

330uF 25V KZE

330uF 25V KZE

R7409

10K F

R7450

0

(3216)

R7451

0

(3216)

RSS100N03

R7452

0

(3216)

R7453

0

(3216)

RSS100N03

RSS075P03

1,2,3

Q7407

4

5,6,7,8

5,6,7,8

Q7409

4

1,2,3

RSS075P03

1,2,3

Q7401

4

5,6,7,8

5,6,7,8

Q7403

4

1,2,3

RB070M30

D7412

D7413

RB070M30

RB070M30

D7403

D7404

RB070M30

4.7u 25V
(3216)

C7420

C7421

4.7u 25V
(3216)

4.7u 25V
(3216)

C7405

C7406

4.7u 25V

(3216)

5,6,7,8

1,2,3,4

BLCP4220

5,6,7,8

1,2,3,4

BLCP4220

T7403

T7401

C7416

C7417

C7418

C7402

C7403

0.022uF 25V

12pF 5kV

(ECC)

12pF 5kV

(ECC)

C7419

0.022uF 25V

C7401

0.022uF 25V

12pF 5kV

(ECC)

12pF 5kV

(ECC)

C7404

0.022uF 25V

9

12

13

16

9

12

13

16

R7403

0

D7410

DAN217U

D7411

DAN217U

D7401

DAN217U

D7402

DAN217U

C7407
N.M

R7401
33K F

R7402
68K F

P7401

1

3

1717823-1

P7402

1

3

1717823-1

E

R7430

R7438

0

100

R7412

C7425

100 F

N.M

R7414

N.M

D

R7442
51k F

R7441

P7405

GND

1

+B5-12V

C

B

A

2

3

4

5

6

7

8

9

10

11

12

12R-FJ

S GND

STB

OFL2

INV OSC

INV ERR

SRT

SS

REG2

IS2-1

IS2-2

R7444

0

(3225)

R7439
N.M

51kF

3

4

R7433

5

6

C7446

N.M

C7445

N.M

N.M

1

2

R7440

47K F

Q7402

UM6K1N

R7417

N.M

R7410

N.M

R7422

1.1K F

R7411

1.1K F

R7420

N.M

R7418

75K F

C7455

N.M

R7443
75KF

C7437
N.M

100K F

R7407

100K F

R7408

R7419

36k

F

R7416

R7428

R7421

C7438

330p CH

4700pF/50V

C7427

2200pF

4700pF/50V

C7429

2200pF

C7426

C7428

R7415

0

68K F

68K F

1K F

IC7402

DUTY

BRT

BCT

RDIS

RT

SRT

CT

GND

FB1

IS1

VS1

FB2

IS2

VS2

R7413

N.M

BD9766FV

VCC

PGND

SCP2

SCP1

REG

COMP2

COMP1

STB

FAIL

R7432

0

D7417

HZU5.1B

C7415

C7444

C7431

0.047uF 16V

330uF 25V KZE

330uF 25V

KZE

C7432

4.7u 25V

C7433

C7434

C7435

C7436

R7426

R7427

100

100

(3216)

2.2u 10V
(2125)

2.2u 10V

(2125)

0.22u 16V

0.1u 16V

10K F

10K F

P1

N1

N2

P2

SS

R7435

R7431

R7436

10K F

R7454

0

(3216)

R7455

0

(3216)

RSS100N03

R7456

0

(3216)

R7457

0

(3216)

RSS100N03

RSS075P03

1,2,3

Q7404

4

5,6,7,8

5,6,7,8

Q7406

4

1,2,3

RSS075P03

1,2,3

Q7410

4

5,6,7,8

5,6,7,8

Q7411

4

1,2,3

RB070M30

D7408

D7409

RB070M30

RB070M30

D7420

D7421

RB070M30

4.7u 25V
(3216)

C7413

C7414

4.7u 25V
(3216)

4.7u 25V
(3216)

C7424

C7430

4.7u 25V
(3216)

5,6,7,8

1,2,3,4

BLCP4220

5,6,7,8

1,2,3,4

BLCP4220

T7402

T7404

C7409

C7410

C7411

C7440

C7441

0.022uF 25V

12pF 5kV

(ECC)

12pF 5kV

(ECC)

C7412

0.022uF 25V

C7439

0.022uF 25V

12pF 5kV

(ECC)

12pF 5kV

(ECC)

C7442

0.022uF 25V

9

12

13

16

9

12

13

16

R7406

0

C7443
N.M

D7406

DAN217U

D7407

DAN217U

D7418

DAN217U

D7419

DAN217U

R7404
33K F

R7405
68K F

P7403

1

3

1717823-1

P7406

1

3

1717823-1

87

109654321

11312 1514 1716 1918 2120

D85 D86

Ë

INVERTER GROUND-A Unit (LC-37GA3E)

Ë

INVERTER GROUND-B Unit (LC-37GA3E)

H

RUNTKA082WJZZ

G

F

E

D

C

B

A

1717823-1

ＭＰ

1717823-1

1717823-1

1717823-1

1717823-1

P7601

1

3

P7602

1

3

P7603

1

3

P7604

1

3

P7605

1

3

TH7601

N.M

TH7602

N.M

TH7603

N.M

TH7604

N.M

R7605

IK

R7618

IK

R7606

IK

R7621

IK

R7629

1.3KF

R7609

IK

R7623

IK

R7615

IK

R7625

R7630

0

DAN217U

IK

R7627

1.3KF

R7628
0

DAN217U

DAN217U

DAN217U

DAN217U

D7606

DAN217U

D7608

DAN217U

D7601

D7603

DAN217U

D7605

D7607

DAN217U

D7602

D7604

R7616

D7609

DAN217U

D7610

R7611

1M

1M

R7602

1M

R7608

1M

R7613

1M

R7619

1M

R7604

1M

R7622

1M

R7626

N.M

R7624
N.M

1u 25V

(3216)

1u 25V

(3216)

(3216)

UM6K1N

C7604

UM6K1N

C7606

C7608
N.M

UM6K1N

C7601

1u 25V

(3216)

UM6K1N

C7603

1u 25V

(3216)

UM6K1N

C7605

1u 25V

UM6K1N

C7607

1u 25V

(3216)

UM6K1N

C7602

1u 25V

(3216)

R7610
100K F

R7614
100K F

UM6K1N

C7609

1u 25V

(3216)

C7610

N.M

R7601

100K F

R7607

100K F

R7612

100K F

R7617

100K F

R7603

100K F

6

2

1

6

2

1

R7620

100K F

2

2

2

2

2

Q7604

Q7606

2

6

Q7601

1

6

Q7603

1

6

Q7605

1

6

Q7607

1

6

Q7602

1

5

5

6

Q7608

1

H

P7608

OSTEMP

1

SGND

2

REG1

3

IS1-1

3

5

4

3

5

4

3

5

4

3

5

4

3

5

4

3

4

3

4

3

5

4

R7634

0

(3225)

R7633

0

(3225)

R7632

0

(3225)

R7631

0

(3225)

IS1-2

REG2

IS2-1

IS2-2

OSTEMP

SGND

REG1

IS1-1

IS1-2

REG2

IS2-1

IS2-2

S8B-PASK-2

OSTEMP

SGND

REG2

IS2-1

IS2-2

N.C

N.M

P7606

P7607

06PL-FJ

4

5

6

7

8

1

2

3

4

5

6

7

8

1

2

3

4

5

6

LUG7604

SD01138-21

LUG7603

SD01138-21

LUG7602
SD01138-21

LUG7601

SD01138-21

RUNTKA083WJZZ

PSD-0376-D

G

ＭＰ

F

E

D

C

B

A

P7651

1

3

1717823-1

P7652

1

3

1717823-1

P7653

1

3

1717823-1

P7654

1

3

1717823-1

R7667

IK

TH7651

NCP18XH103J03RB

R7661

IK

R7654

IK

TH7652

N.M

R7663

IK

R7656

IK

TH7653

N.M

R7668

IK

R7673

1.3KF

R7674

TH7654

N.M

0

R7670

1.3KF

R7671
0

DAN217U

DAN217U

DAN217U

DAN217U

D7657

DAN217U

D7655

D7653

DAN217U

D7651

D7654

DAN217U

D7652

D7656

DAN217U

D7658

R7666

1M

R7658

R7653

1M

R7660

R7655

1M

R7664

R7672

N.M

R7669

C7657

N.M

N.M

R7665

100K F

UM6K1N

C7655

1u 25V

(3216)

R7657

100K F

UM6K1N

1M

1M

1M

C7653

1u 25V

(3216)

C7651

1u 25V

(3216)

C7654

1u 25V

(3216)

C7652

1u 25V

(3216)

C7656

1u 25V

(3216)

C7658

N.M

R7652

100K F

UM6K1N

R7659

100K F

UM6K1N

R7651

100K F

UM6K1N

R7662

100K F

UM6K1N

3

5

6

4

2

Q7655

1

P7655

OSTEMP

1

3

5

6

4

2

Q7653

1

3

5

6

4

2

Q7651

1

3

5

6

4

2

Q7654

1

3

5

6

4

2

Q7652

1

3

5

6

4

2

Q7656

1

R7678

0
R7677

0
R7676

0
R7675

0

(3225)

(3225)

(3225)

SGND

REG2

IS2-1

IS2-2

N.C

2

3

4

5

6

06R-FJ

LUG7654

SD01138-21

LUG7653

SD01138-21

LUG7652
SD01138-21

LUG7651
SD01138-21

654321

D87 D88

654321

1

Ë

INVERTER-A Unit (LC-32GA3E)

H

CN7501

Vin

1

N.C

2

GND

3

G

CN7502

S GND

1

F

E

D

2

3

4

5

6

7

8

9

10

11

12

STB

OFL

N.C

INV OSC

INV ERR

REG

IS1

IS2

N.C

N.C

N.C

C7553

R7510

C

B

A

6

123

D7501

R7538

R7542

R7539

R7541

5

4

F7501

R7540

Q7513

U.CODE RUNTKA069WJZZ

JP7502

R7543

R7501

R7502

C7554

R7511

R7512

R7516

R7513

R7514

R7515

C7512

R7508

3

C7501

R7504

R7505

R7506

R7507

R7545

C7502

C7503

C7505

D7518

IC7502

2

R7509

R7503

C7504

C7506

1

IC7501

DUTY

BRT

BCT

RDIS

RT

SRT

CT

GND

FB1

IS1

VS1

FB2

IS2

VS2

C7513

VCC

P1

N1

PGND

N2

P2

SCP2

SCP1

SS

REG

COMP2

COMP1

STB

FAIL

R7524

R7523

R7517

R7525

R7522 R7521

C7511

(3216)

C7510

C7509

C7508

C7507

R7520

R7519

R7518

(2125)

(2125)

12 345

VS2 VCC GND

N2

C7514

P2

R7526

(3216)

C7515

R7527

CN7503

Q7509

Q7510

R7528

(3216)

Q7511

Q7512

C7516

C7517

C7518

C7519

C7520

R7544

R7533

ZD7502

ZD7501

R7529

(3216)

C7555

(3216)
R7530

R7531

(3216)

C7556

(3216)
R7532

R7534

(3216)

C7557

(3216)
R7535

R7536

(3216)

C7558

R7537

(3216)

6

4,5

T7501

D7510

D7511

D7512

D7513

D7514

D7515

D7516

D7517

(3216)

C7521

C7522

(3216)

(3216)
C7523

C7524

(3216)

(3216)

C7525

C7526

(3216)

(3216)
C7527

C7528
(3216)

1,2

4,5

1,2

4,5

1,2

4,5

1,2

4,5

1,2

4,5

1,2

4,5

1,2

1,2

4,5

T7502

T7503

T7504

T7505

T7506

T7507

T7508

C7531

10

10

C7534

6

(3216)

6

C7537

10

10

C7540

6

(3216)

6

C7543

10

10

C7546

6

(3216)

6

C7549

10

10

C7552

6

(3216)

1,2,3

Q7501

4

5,6,7,8

5,6,7,8

Q7502

4

1,2,3

R7547

LUG7502

1,2,3
Q7503

4

5,6,7,8

5,6,7,8

Q7504

4

1,2,3

1,2,3

Q7505

4

5,6,7,8

5,6,7,8

Q7506

4

1,2,3

1,2,3

Q7507

4

5,6,7,8

5,6,7,8

Q7508

4

1,2,3

R7546

LUG7501

(3216)

(3216)

(3216)

(3216)

C7529

C7530

C7532

C7533

C7535

C7536

C7538

C7539

C7541

C7542

C7544

C7545

C7547

C7548

C7550

C7551

D7502

D7503

D7504

D7505

D7506

D7507

D7508

D7509

CN7504

2

1

CN7505

2

1

CN7506

2

1

CN7507

2

1

87

109654321

11312 1514 1716 1918 2120

D77 D78

1

Ë

INVERTER-B Unit (LC-32GA3E)

H

U.CODE RUNTKA070WJZZ

VS2 VCC GND N2

CN7402

12 3

P2

45

R7407

ZD7401

R7409

R7408

(3216)

C7440

(3216)

R7410

(3216)

C7441

R7411

(3216)

T7401

4,5

6

1,2

T7402

T7403

T7404

(3216)

10

10

6

6

(3216)

10

10

6

(3216)

C7418

C7421

(3216)

C7424

C7427

1,2,3

Q7401

4

5,6,7,8

5,6,7,8

4

Q7402

1,2,3

R7420

LUG7404

1,2,3

Q7403

4

5,6,7,8

5,6,7,8

Q7404

4

1,2,3

R7417

LUG7401

D7409

D7410

(3216)

D7411

D7412

(3216)

C7408

1,2

(3216)

4,5

1,2

C7409

(3216)

4,5

C7410

1,2

(3216)

4,5

C7411

(3216)

C7416

C7417

C7419

C7420

C7422

C7423

C7425

C7426

D7401

D7402

D7403

D7404

CN7401

2

Vin

GND

F7401

JP7401

G

C7404

R7401

R7402

F

C7401

R7403

R7404

E

(3216)

Q7409

Q7410

C7403

C7405

CN7403

21

1

CN7404

2

1

D

C7402

R7405

C

R7406

(3216)

Q7411

Q7412

C7406

B

C7407

A

R7416

ZD7402

R7412

(3216)

C7442

R7413

(3216)

R7414

(3216)

C7443

R7415

(3216)

T7405

4,5

6

C7428

C7429

C7431

C7432

C7434

C7435

C7437

C7438

D7405

D7406

D7407

D7408

10

10

6

(3216)

6

10

10

6

(3216)

(3216)

C7430

C7433

(3216)

C7436

C7439

1,2,3

Q7405

4

5,6,7,8

5,6,7,8

Q7406

4

1,2,3

R7418

LUG7402

1,2,3

Q7407

4

5,6,7,8

5,6,7,8

Q7408

4

1,2,3

R7419

LUG7403

D7413

D7414

(3216)

D7415

D7416

(3216)

C7412

(3216)

C7413

(3216)

C7414

(3216)

C7415

(3216)

4,5

4,5

4,5

1,2

T7406

1,2

T7407

1,2

T7408

1,2

CN7405

2

1

CN7406

2

1

87

109654321

11312 1514 1716 1918 2120

D79 D80

Ë

INVERTER GROUND-A Unit (LC-32GA3E)

Ë

INVERTER GROUND-B Unit (LC-32GA3E)

H

G

F

E

D

C

B

RUNTKA071WJZZ

LUG7601

LUG7602

LUG7603

CN7603

1

2

JP7601

CN7604

1

2

JP7602

CN7605

1

2

JP7603

CN7606

1

2

TH7601

TH7602

TH7603

TH7604

R7632

R7636

R7628

R7630

R7634

R7638

R7627R7626

R7629

R7631

R7633

R7635

R7637

R7639

R7641R7640

D7610

D7611

D7612

D7613

D7605

D7614

D7615

D7616

D7601

D7602

D7603

D7604

D7609

D7606

D7607

D7608

R7601

R7603

R7605

R7607

R7609

R7611

R7613

R7615

R7617

R7619

R7621

R7623

R7610

R7643

R7645

R7647

R7618

C7601

R7620

C7602

R7622

C7603

R7624

C7604

R7625

C7605

R7644

C7606

R7646

C7607

R7648

C7608

SGND

R7602

6

2

2

3

1

5

Q7601

4

R7604

6

2

3

1

5

Q7602

4

R7606

6

2

3

1

5

Q7603

4

R7608

6

2

3

1

5

Q7604

4

R7642

6

2

3

1

5

Q7608

4

R7612

6

2

3

1

5

Q7605

4

R7614

6

2

3

1

5

Q7606

4

R7616

6

2

3

1

5

Q7607

4

1

2

OSTEMP SGND

REG

43

IS2

N.C

N.C

N.C

IS2

IS1

REG

SGND

OSTEMP

5

N.C

CN7601

8

7

6

5

4

3

2

1

CN7602

G

F

E

D

C

U.CODE

RUNTKA072WJZZ

LUG7653

LUG7651

LUG7652

JP7653

JP7651

JP7652

CN7652

1

2

CN7653

1

2

CN7654

1

2

CN7655

1

2

TH7651

TH7652

TH7653

R7680

R7684

R7688

R7676

R7678

R7682

R7686

R7674

R7681

R7685

R7689

R7677

R7679

R7683

R7687

R7675

D7666

D7661

D7662

D7663

D7655

D7664

D7665

D7660

D7652

D7654

D7659

D7656

D7657

D7658

D7651

D7653

R7653

R7657

R7661

R7665

R7651

R7655

R7659

R7693

R7663

R7667

R7669

R7671

R7673

R7660

R7695

R7697

C7651

R7670

C7652

R7672

C7653

R7690

C7654

R7691

C7655

R7694

C7656

C7657

R7698

C7658

R7668

R7652

R7654

R7656

R7658

R7692

R7662

R7696

R7664

R7666

6

2

3

1

5

Q7651

4

6

2

3

1

5

Q7652

4

6

2

3

1

5

Q7653

4

6

2

3

1

5

Q7654

4

6

2

3

1

5

Q7658

4

6

2

3

1

5

Q7655

4

6

2

3

1

5

Q7656

4

6

2

3

1

5

Q7657

4

H

CN7651

1

REG

2

N.C

IS2OSTEMP

43

5

B

A

654321

A

654321

D81 D82

LC-32GA3E
LC-37GA3E

<Power supply>

TROUBLE SHOOTING TABLE

No power supply (Front LED is off) or no power-up (Front LED does not change from red to green)

Is the power supply cord properly connected to the main unit?

YES

Are F1701, F1702, and F1703 normal?

YES

Is the output voltage of BU+6V Iine (pin 5 of DP terminal)
normal?

YES

Are the wire harness, FFC, etc. in the set connected properly? Reconnect the wire harness, FFC, etc. and check again.

YES

Is a voltage of about 380 V applied to C4701 and C5701 when
power is turned on?

YES

Is a voltage of 15 V applied to both inverter lines (INV_15V-1
and INV_15V-2) after power is turned on?

YES

Are all power supply circuits for DC/DC converter output
normal?

YES

Check or replace DCIDC converters and lines.
URB6V (IC6753)
BS10V (IC6752)
UR19V (IC5752)
UR6V / 5V (IC6754 / IC3752)

1.8 V / 3.3 V / 35 V (lC6756)

NO

NO

NO

NO

NO

NO

NO

Reconnect the power supply cord and turn on the power

Replace F1701, F1702, and F1703, and then turn on the
power. If a fuse still blows, replace Z1701 , Z1702, D1701,
TRA1701 , D1702, D1703 and D2703.

In stand-by, is a voltage of about 170 V applied to C3701 ?

YES

Check the oscillation side (primary side) and the
commutation side (secondary side) of the BU5V system
power supply circuit.

YES

Is there any broken part or short-circuit on BU6V Iine?

YES

Remove the broken part or short-circuit and check again.

Check the 380V system power supply circuit. (L2701~3,
IC2701~2, Q2701~8, D2701~2, D1704, PC2701, etc.)

Check the oscillation side (primary side) and the commutation
side (secondary side) of each power supply circuit for the
inverters (INV_15V-1 and INV_15V-2).

Check the oscillation side (primary side) and the commutation
side (secondary side) of each power supply circuit for DC/DC
converters

• Power switch: Top panel
(Main) Power (DC cutoff: Detected by microprocessor)
[Scheme of power supply system]

Triac

PS ON

[(Main) Power OFF sequence]

1) (Main) Power OFF (DC switch)

2) (Main) Power shutoff is detected by the monitor microprocessor port

3) Standby request (power cord) is sent to Seine from microprocessor.

4) Seine shutdown process

5) Reception of shutdown permission from Seine

6) Monitor microcomputer turns off the relay to enter the standby mode

Seine

Main

Monitor microprocessorBackup

(Main) Power

36

TROUBLE SHOOTING TABLE (Continued)

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

No sound comes out (1)

No sound comes out at UHF/VHF reception.

Is the SIF output from the tuner as specified?

(TU1101 Pin 7)

Check TU1101 (UV tuner) and its peripheral

circuits.

Is the input signal to pin (67) (ANA_lN1+) and

pin (69) (ANA_lN2+) of IC2701

(MULTI_SOUND_PROCESSOR) as specified?

Check the peripheral circuits of filter circuits

(Q1121 -2) (Q1119-20).

Are the audio signals from pins (34) and (33)

(SC2_OUTL/R) of IC2701 to pins (32) and (33)

of IC2714 (DIR) as specified?

Check the lines from pins (34) and (33)

(SC2_OUTL/R) of IC2701 to pins (32) and (33)

(DIR) of IC2714.

Are the audio outputs (A-OUT_L/R) from pins

(28) and (29) of IC2714 as specified?

Are signals LRCK, BICK, SDTO and SDTI

inputted/outputted from IC2714 to IC2710

(DSP) normally?

Are the audio outputs from pins (28) and (29)

of IC2714 to pins (13) and (15) of P3801 (1-bit

amplifier input) as specified?

Check IC2714 and its peripheral circuits.

Check the lines from pins (28) and (29) of

IC2714 to pins (13) and (15) of P3801 (1-bit

amplifier input). (IC3802, Q3805-6,8)

Is the signal from the 1-bit amplifier inputted to

each terminal of P3810?

Check the 1-bit amplifier and its peripheral

circuits.

Is relay normally switched from RY3801

(speaker switching) of the AV PWB ?

No external input sound comes out.

<INPUT-1>

Is the L-ch audio signal inputted from pin (6) of input terminal SC1101 to pin (2) of IC3801 ?

Is the R-ch audio signal inputted from pin (2) of input terminal SC1101 to pin (4) of IC3801 ?

<lNPUT-2>

Is the L-ch audio signal inputted from pin (6) of input terminal SC1102 to pin (9) of IC3801 ?

Is the R-ch audio signal inputted from pin (2) of input terminal SC1102 to pin (11) of IC3801 ?

<lNPUT-3>

Is the L-ch audio signal inputted from pin (6) of input terminal SC1103 to pin (16) of IC3801 ?

Is the R-ch audio signal inputted from pin (2) of input terminal SC1103 to pin (18) of IC3801 ?

<lNPUT-4>

Is the L-ch audio signal inputted from pin (8) of input terminal J141 to pin (23) of IC3801 ?

Is the R-ch audio signal inputted from pin (4) of input terminal J142 to pin (25) of IC3801 ?

< INPUT-5>

Is the L-ch audio signal inputted from pin (2) of input terminal J1900 to pin (29) of IC3801 ?

Is the R-ch audio signal inputted from pin (3) of input terminal J1900 to pin (31) of IC3801 ?

Is the L-ch audio signal outputted to pin (52) of IC3801 ?

Is the R-ch audio signal outputted to pin (54) of IC3801 ?

Are the audio signals inputted to pins (56) (L-ch) and (57) (R-ch) of IC2701 ?

LC-32GA3E
LC-37GA3E

37

LC-32GA3E

YES

YES

YES

NO

NO

No sound comes out from the headphones.

Check IC2714 and its peripheral circuits.

Check the mute control terminal pin (2) of

IC2702.H: Active, L: Mute

Are audio output pins (26) and (27) of IC2714

(DIR) as specified?

Are audio output pins (1) and (7) of IC2702

(H/P_AMP) as specified?

Check J2402 (HEAD_PHON_JACK) and its

peripheral circuits.

NO

NO

YES

YES

YES

No sound comes out. (2)

No sound comes out. (3)

Are audio output pins (37) and (36)

(SC1_OUT_L/R) of IC2701 (MULTI_SOUND_

PROCESSOR) as specified?

Are audio output pins (7) and (1) of IC2704

(EQ_AMP) as specified?

No monitor audio output comes out.

Is the monitor audio output set to anything other

than "Variable"?

Are the headphones disconnected?

Check IC2701 and its peripheral circuits.

Check IC2704 and its peripheral circuits.

NO

YES

Are there audio signal inputs at pins (5) and

(14) of IC1110 (AUDIO_SW)?

Check between IC2704 and IC1110.

NO

YES

Are audio output pins (3) and (13) of IC1110

(AUDIO_SW) as specified?

Is the control signal at pin (10) of IC1108 as

specified?

YES

Check between IC1110 and AUDIO OUTPUT

terminal.

Check IC1108 and its peripheral circuits.

YES

LC-37GA3E

TROUBLE SHOOTING TABLE (Continued)

38

TROUBLE SHOOTING TABLE (Continued)

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

NO

YES

YES

YES

YES

YES

YES

NO

NO

<Signals>

<CVBS, Y/C, S-VIDEO signal> input

No VIDEO output (1)

External input in trouble <lNPUT-1>

Is Input1 selected in the input switching

menu screen?

Select Input1 and the input signal in

the input switching menu screen .

Is there VIDEO signal input at each VIDEO

input terminal of IC3801 (AV SWITCH)?

(CVBS signal input)

Check between pin (20) of SC1101

and pin (1) of IC3801.

External input in trouble <INPUT-2>

Is Input 2 selected in the input switching menu

screen?

Select Input 2 and the input signal in the

input switching menu screen.

Is there VIDEO signal input at each VIDEO

input terminal of IC3801 (AV SWITCH)?

(Y/C VIDEO signal input)

Are there Y and C signals input at pins (10) and (12)?

(CVBS signal input)

Is there VIDEO signal input at pin (8) ?

(CVBS signal input)

Check between pin (20) of SC1102 and

pin (8) of IC3801 .

(Y/C VIDEO signal input)

Check between pins (20) and (15) of

SC1102 and pins (10) and (12) of IC3801.

External input in trouble <INPUT-3>

Is Input 3 selected in the input switching menu

screen?

Select Input 3 and the input signal in the

input swltching menu screen.

Is there VIDEO signal input at each VIDEO

input terminal of IC3801 (AV SWITCH)?

(CVBS signal input)

Is there VIDEO signal input at pin (15)?

(Y/C VIDEO signal input)

Are there Y and C signals input at pins (17) and (19)?

(CVBS signal input)

Check between pin (20) of SC1103 and

pin (15) of IC3801.

(Y/C VIDEO signal input)

Check between pins (20) and (15) of

SC1103 and pins (17) and (19) of IC3801.

External input in trouble <lNPUT-4>

Is Input 4 selected in the input switching menu

screen ?

Select Input 4 and the input signal in the

input switching menu screen.

Check IC3801 (AV SWITCH) and the peripheral circuits.

Is there VIDEO signal input at each VIDEO input

terminal of IC3801 (AV SWITCH)?

(S-VIDEO signal input)

Are there Y and C signals input at pins (24) and (26)?

(VIDEO signal input)

Is there VIDEO signal input at pin (22) ?

(VIDEO signal input)

Check between pin (2) of J142 and pin (22)

of IC3801.

(S-VIDEO signal input)

Check between pins (3) and (4) of J141 and

pins (24) and (26) of IC3801.

(CVBS, VIDEO Signal Input) : Are there MAIN VIDEO signal output at pin (56) of IC3801 and SUB VIDEO signal output at pin (44)?

(Y/C, S-VIDEO Signal Input): Are there MAIN-Y signal output at pin (56) of IC3801 , MAIN-C signal output at pin (58), SUB-Y signal output at pin (44) and SUB-C signal output at pin (47)?

(CVBS, VIDEO Signal Input) : Are there VIDEO signals input at pin (8) of IC401 (MAIN L.P.F.) and pin (2) of IC600 (SUB L.P.F.)?

(Y/C, S-VIDEO Signal Input) : Are there MAIN-Y and MAIN-C signals input at pins (8) and (11) of IC401. Are there SUB-Y and SUB-C signals input at pins (2) and (6) of IC600?

<MAIN>

3D-YIC (PAL)

(CVBS, VIDEO signal input)

Is there VIDEO signal input at pin (8) of

IC402 (MAIN 3D-YC & CHROMA) ?

(Y/C, S-VIDEO signal input)

Are there Y and C signals input at pins (8) and

(18) of IC402 (MAIN 3D-YC & CHROMA) ?

Check between IC401 and IC402.

Are there digital VIDEO signal outputs at

pins (124)-(133) and (140)-(159) of IC402?

Check IC402 and the peripheral circuits

<MAIN>

2D-Y/C (SECAM)

(CVBS, VIDEO signal input)

Is there VIDEO signal input at pin (12) of

lC502 (MAIN 2D-YC & CHROMA) ?

(Y/C, S-VIDEO signal input)

Are there Y and C signals input at pins (12) and

(16) of IC5O2 (MAIN 2D-YC & CHROMA) ?

Check between IC401 and IC502.

Are there digital VIDEO signal outputs at

pins (115)-(126) and (133)-(144) of IC502?

Check IC502 and the peripheral circuits.

<SUB>

(CVBS, VIDEO signal input)

Is there VIDEO signal input at pin (72) of

IC601 (SUB 2D-YC & CHROMA) ?

(Y/C, S-VIDEO signal input)

Are there Y and C signals input at pins (72)

and (71) of IC601 (SUB 2D-YC & CHROMA) ?

Check between IC401 and IC601.

Are there digital VIDEO signal outputs at

pins (31)-(40) and (41)-(50) of IC601 ?

Check IC601 and the peripheral circuits.

Check between IC3801 and

IC401/IC600.

Are there digital VIDEO signal inputs at pins (53), (54), (57)-(60), (51), (52) (RE0-7), pins(63)-(68), (61), (62) (GE0-7), pins (73)-(78), (69), (70) (BE0-

7), pins (81)-(86), (79), (80) (RO0-7), pins (91)-(96), (89), (90) (GO0-7), pins (99), (100), (1), (2), (5), (6), (97), (98) (BO0-7), and pins (7)-(10)

(HSYNC, VSYNC, DE, CLKIN) of IC3201 (LVDS TRANSMITTER)?

Replace the main PWB, or check between

IC402/C502/lC601 and IC3201.

Are there digital VIDEO signal outputs at pins (49)(TA1-), (48)(TA1+), (47)(TB1 -), (46)(TB1 +), (44)(TC1 -), (43)(TC1 +),(41)(TCLK-), (42)(TCLK+),

(40)(TD1 -), (39)(TD1+), (37)(TA2-), (36)(TA2+), (35)(TB2-), (34)(TB2+), (32)(TC2-), (31)(TC2+), (30)(TCLK2-),(29)(TCLK2+), (28)(TD2-) and

(27)(TD2+) of IC3201?

Check IC3201 (LVDS_TRANSMITTER)

and the peripheral circuits.

Check the LCD CONTROL PWB.

(CVBS signal input)

Is there VIDEO signal input at pin (1) ?

LC-32GA3E
LC-37GA3E

39

LC-32GA3E

NO

YES

NO

YES

YES

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

YES

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

NO

<Signals>

<COMPONENT, RGB signal> input

No video output (2)

External input in trouble <lNPUT-1 >

Is Input 1 selected in the input switching

menu screen?

Select Input 1 and the input signal in

the input swltching menu screen.

Is there video signal input at each video

input terminal of IC3805 (AV SWITCH)?

(RGB signal input)

Are there RGB signals input at pins (63),

(61) and (59) ?

(RGB signal input)

Check between pins (15), (11) and (7)

of SC1101 and pins (63), (61) and (59)

of IC3805 .

External input in trouble <lNPUT-3>

Is Input 3 selected in the input switching menu screen?

Select Input 3 and the input signal in the input

switching menu screen.

Is there video signal input at each video input terminal of

IC3805(AV SWITCH)?

(COMPONENT input)

Are there Y, Pb and Pr signals input at pins (15), (17) and (19) ?

(RGB signal input)

Are there RGB signals input at pins (9), (5) and (7)?

(COMPON ENT input)

Check between pins (2), (7) and (4) of J1101 and pins

(15), (17) and (19) of IC3801.

(RGB signal input)

Check between pins (15), (11) and (7) of SC1103 and

pins (9), (5) and (7) of IC3805 .

Are there MAIN VIDEO signals output at pins (50), (48) and (46) (Y, Pb and Pr signals) , PASS VIDEO signals output at pins (38), (36) and (34) (Y, Pb and Pr signals) and SUB VIDEO signal output at pins

(44), (42) and (40) (Y, Pb and Pr signals) of IC3805?

<MAIN>

RGB Signals

Are there MAIN VIDEO signals input to pins

(24), (29) and (32) (Y, Cb and Cr) of IC502

(2D-YC & CHROMA) form pins (50), (48)

and (46) (Y, Pb and Pr) of IC3805 ?

Check between IC3805 and IC502.

Are there digital video signal outputs at pins

(115)-(126) and (133)-(144) of IC502?

Check IC502 and the peripheral circuits.

<SUB>

RGB / COMPONENT

Signals

Are there VIDEO signals input to pins (8), (10)

and (13) (Y, Pb and Pr) of IC600 (L.P.F.) form pins

(44), (42) and (40) (Y , Pb and Pr) of IC3805 ?

Check between IC3805 and IC600.

Are there SUB VIDEO signal input to pins (2),

(1) and (3) (Y, Cb and Cr) of IC601 (2D-YC &

CHROMA)?

Check between IC600 and IC601.

Are there digital video signal output at pins (31)

-(40) and (41) - (50) of IC601 ?

Check IC601 and the peripheral circuits.

<MAIN>

COMPONENT Signals

Are there VIDEO signals input to pins (9), (12) and

(14) (Y , Pb and Pr) of IC401 (L.P.F .) form pins (38),

(36) and (34) (Y , Pb and Pr) of IC3805 ?

Check between IC3805 and IC401 .

Are there MAIN VIDEO signal input to pins (8),

(18) and (20) (Y, Cb and Cr) of IC402 (3D-YC &

CHROMA)?

Check between IC401 and IC402.

Are there digital video signal output at pins

(124) - (133) and (140) - (159) of IC402?

Check IC402 and the peripheral circuits.

Check IC3805 (AV SWITCH) and the

peripheral circuits.

Are there digital video signal inputs at pins (53), (54), (57)-(60), (51), (52) (RE0-7), pins(63)-(68), (61), (62) (GE0-7), pins (73)-(78), (69), (70) (BE0-7), pins

(81)-(86), (79), (80) (RO0-7), pins (91)-(96), (89), (90) (GO0-7), pins (99), (100), (1), (2), (5), (6), (97), (98) (BO0-7), and pins (7)-(10) (HSYNC, VSYNC, DE,

CLKIN) of IC3201 (LVDS TRANSMITTER)?

Replace the main PWB, or check between

IC402/IC502/IC601 and IC3201.

Are there digital video signal outputs at pins (49)(TA1-), (48)(TA1+), (47)(TB1-), (46)(TB1+), (44)(TC1-), (43)(TC1+),(41)(TCLK-), (42)(TCLK+), (40)(TD1-),

(39)(TD1+), (37)(TA2-), (36)(TA2+), (35)(TB2-), (34)(TB2+), (32)(TC2-), (31)(TC2+), (30)(TCLK2-),(29)(TCLK2+), (28)(TD2-) and (27)(TD2+) of IC3201?

Check IC3201 (LVDS_TRANSMlTTER) and

the peripheral circuits.

Check the LCD CONTROL PWB.

LC-37GA3E

TROUBLE SHOOTING TABLE (Continued)

40

TROUBLE SHOOTING TABLE (Continued)

NO

YES

YES

YES

YES

NO

NO

YES

YES

YES

YES

NO

NO

NO

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

YES

YES

NO

NO

No video output (3)

No TV video outpuut.

Is TV selected in the input switching menu

screen?

Select TV in the input switching menu

screen. Check that "Audio Only" is "Off".

Is there TV video signal output at pin (17) of

Tuner?

Check tuner and and the peripheral circuits.

Is there TV video signal output at pin (5) (TP1183)

of IC1106 (LEVEL ADJ.)?

Is there LEVEL CTL signal input to pin (6) of

IC1106 from IC1108?

Is there TV video signal input at pin (63) of

IC3801 (AV SWITCH)?

Are there VIDEO signals input at pin (8) of IC401 (MAIN L.P.F.) and pin (2) of IC600 (SUB L.P.F.)?

Check IC3801 (AV SWITCH) and the

peripheral circuits.

Are there MAIN VIDEO signal output at pin (56) and SUB VIDEO signal output at pin (44) of IC3801 ?

Check between IC3801 and IC401/lC600.

<MAIN>

3D-Y/C (PAL)

Is there video signal input at pin (8) of IC402

(MAIN 3D-YC & CHROMA) ?

Check between IC401 and IC402.

Are there digital video signal outputs at pins

(124)-(133) and (140)-(159) of IC402?

Check IC402 and the peripheral circuits.

<MAIN>

2D-Y/C (SECAM)

Is there video signal input at pin (12) of IC502

(MAIN 2D-YC & CHROMA) ?

Check between IC401 and IC502.

Are there digital video signal outputs at pins

(115)-(126) and (133)-(144) of IC502?

Check IC502 and the peripheral circuits.

<SUB>

Is there video signal input at pin (72) of IC601

(SUB 2D-YC & CHROMA) ?

Check between IC401 and IC601.

Are there digital video signal outputs at pins (31)-

(40) and (41)-(50) of IC601 ?

Check IC601 and the peripheral circuits.

Are there digital video signal inputs at pins (53), (54), (57)-(60), (51), (52) (RE0-7), pins(63)-(68), (61), (62) (GE0-7), pins (73)-(78), (69), (70) (BE0-7), pins (81)-(86), (79),

(80) (RO0-7), pins (91)-(96), (89), (90) (GO0-7), pins (99), (100), (1), (2), (5), (6), (97), (98) (BO0-7), and pins (7)-(10) (HSYNC, VSYNC, DE, CLKIN) of IC3201 (LVDS

TRANSMITTER)?

Replace the main PWB, or check between

IC402/IC502/IC601 and IC3201 .

Are there digital video signal outputs at pins (49)(TA1-), (48)(TA1+), (47)(TB1-), (46)(TB1+), (44)(TC1-), (43)(TC1+),(41 )(TCLK-), (42)(TCLK+), (40)(TD1- ), (39)(TD1+),

(37)(TA2-), (36)(TA2+), (35)(TB2-), (34)(TB2+), (32)(TC2-), (31)(TC2+), (30)(TCLK2-),(29)(TCLK2+), (28)(TD2-) and (27)(TD2+) of IC3201?

Check IC3201 (LVDS TRANSMITTER) and the

peripheral circuits.

Check the LCD CONTROL PWB.

LC-32GA3E
LC-37GA3E

41

LC-32GA3E
LC-37GA3E

<Signal mode>

TROUBLE SHOOTING TABLE (Continued)

Image from DVI input does not appear (digital PC is not displayed) (1)

Are there Rx0, 1, 2 and C signal
inputs to IC1900 (HDCP_LSI)?

YES

Is each signal sent from Hsync (pin

18), Vsync (pin 19) and RGB (pins
23, 26 and 31) of IC1900?

YES

Are DVI/SR/SG/SB and DVI_H/V
signals sent from MD connector?

YES

NO YES

NO

NO

Are IC1915 data accessed by I2C
when connected to PC?

NO

Are outputs at pins (12) and (14) of
IC1917 both (H, H)?

NO

Do output pins (12) and (14) of
IC1917 become (L, L) when analog
AV mode is entered?

NO

Check ME connector I2C signal line.

Check IC1900 and its peripheral
circuits.

Check IC1901, IC1903 and their
peripheral circuits.

YES

YES

Check PC settings.

Check IC1915 and its
peripheral circuits.

Check IC1917 and its
peripheral circuits.

Are DVI/SR/SG/SB and DVI_H/V
signals supplied to IC3700 (ADC)
and 3701 (SYNC_SELECTOR) on
the main PWB?

YES

Check IC3700, IC3701 and their
peripheral circuits.

NO

Check MD harness for disconnection.

42

TROUBLE SHOOTING TABLE (Continued)

Image from DVI input does not appear (Analog PC is not displayed) (2)

LC-32GA3E
LC-37GA3E

Are there RGB signal inputs at pins
(25), (26) and (27), and Hsync/Vsync
signal inputs at pins (28) and (8) from
DVI connector (SC1900)?

YES

Is each signal sent from Hsync and
Vsync (pin 4, 6), of IC1904
(INVERTER)?

YES

Are DVI_SR/SG/SB and DVI_H/V
signals sent from MD connector?

YES

NO YES

NO

NO

Are IC1915(E2PROM) data accessed
by I2C when connected to PC?

NO

Are outputs at pins (12) and (14) of
IC1917(CONTROL) both (H, L)?

NO

Do output pins (12) and (14) of IC1917
become (L, L) when digital AV mode is
entered?

NO

Check ME connector I2C signal line.

Check IC1904 and its peripheral
circuits.

Check IC1901, IC1903 and their
peripheral circuits.

YES

YES

Check PC settings.

Check IC1915 and its
peripheral circuits.

Check IC1917 and its
peripheral circuits.

Are DVI_SR/SG/SB and DVI_H/V
signals supplied to IC3700 (ADC)
and 3701 (SYNC_SELECTOR) on
the main PWB?

YES

Check IC3700, IC3701 and their
peripheral circuits.

NO

Check MD harness for disconnection.

43

LC-32GA3E
LC-37GA3E

TROUBLE SHOOTING TABLE (Continued)

Image from DV1 input does not appear (digital AV is not displayed) (3)

Are there Rx0, 1, 2 and C signal
inputs to IC1900 (HDCP_LSI)?

YES

Are signals sent from Hsync (pin 18),
Vsync (pin 19) and RGB (pins 23, 26
and 31) of IC1900?

YES

Are DVI_SR/SG/SB and DVI_H/V
signals sent from MD connector?

YES

NO YES

NO

NO

Are IC1911 data accessed by I2C
when connected to PC?

NO

Are outputs at pins (12) and (14) of
IC1917 both (H, H)?

NO

Do output pins (12) and (14) of IC1917
become (H, L) when analog PC mode
is entered?

NO

Check ME connector I2C signal line.

Check IC1900 and its peripheral
circuits.

Check IC1901, IC1903 and their
peripheral circuits.

YES

YES

Check PC settings.

Check IC1911 and its
peripheral circuits.

Check IC1917 and its
peripheral circuits.

Are DVI_SR/SG/SB and DVI_H/V
signals supplied to IC3700 (ADC)
and 3701 (SYNC_SELECTOR) on
the main PWB?

YES

Check IC3700, IC3701 and their
peripheral circuits.

NO

Check MD harness for disconnection.

44

TROUBLE SHOOTING TABLE (Continued)

Image from DV1 input does not appear (Analog AV is not displayed) (4)

LC-32GA3E
LC-37GA3E

Are there RGB signal inputs at pins
(25), (26) and (27), and Hsync/Vsync
signal inputs at pins (8) and (28) from
DVI connector (SC1900)?

YES

Are there Vsync and Hsync signal
outputs at pins (4) and (6) of IC1904
(INVERTER)?

YES

Are DVI_SR/SG/SB and DVI_H/V
signals sent from MD connector?

YES

NO YES

NO

NO

Are IC1911(E2PROM) data accessed
by I2C when connected to PC?

NO

Are outputs at pins (12) and (14) of
IC1917(CONTROL) both (L, L)?

NO

Do output pins (12) and (14) of
IC1917 become (H, H) when digital
PC mode is entered?

NO

Check ME connector I2C signal line.

Check IC1904 and its peripheral
circuits.

Check IC1901, IC1903 and their
peripheral circuits.

YES

YES

Check PC settings.

Check IC1915 and its
peripheral circuits.

Check IC1917 and its
peripheral circuits.

Are DVI_SR/SG/SB and DVI_H/V
signals supplied to IC3700 (ADC) and
3701 (SYNC_SELECTOR) on the
main PWB?

YES

Check IC3700, IC3701 and their
peripheral circuits.

NO

Check MD harness for disconnection.

45

LC-32GA3E
LC-37GA3E

Is the power LED lit up in green? Is the power LED blinking in red?

TROUBLE SHOOTING TABLE (Continued)

No sound or picture comes out.

NO

YES

Blinking once? (At regular intervals)

YES

NO

Is the AC cord normal?

Check the power unit.
CCKM and D5V line are not defective.

NO

YES

Is the Backlight off?

To "The backlight does not go on."

YES

Blinking once?

NO

To "The backlight does not go on."

Blinking twice?

NO

Blinking five times?

NO

Blinking six times?

NO

Blinking seven times?

NO

To "No picture comes out."

Table of power LED blinking timing at error occurrence

Type of error

Power supply error
Blinking once: Slow

Lamp error
Blinking once: Fast

Panel power supply error
Blinking twice

In-set temperature error
Blinking five times

Fan error
Blinking six times

H: ON
L: OFF

H: ON
L: OFF

H: ON
L: OFF

H: ON
L: OFF

H: ON
L: OFF

Check the panel power supply circuit.

Check the temperature of the set.

Check the fan motor and its peripheral circuits.

Check the temperature of the 1-bit amplifier
unit.

250ms 1sec

Power LED operation (1 cycle)

YES

YES

YES

YES

YES

No picture comes out.

Is there the clock output at pin (40) of IC4602?

YES

Does the adjustment process menu appear? Check IC4501 and its peripheral circuits.

YES

Check IC4701, IC4901 and their peripheral circuits.

NO

NO

Check the FFC (LV, SC3200, SC4601) connections between the
main PWB and LCD control PWB.

46

TROUBLE SHOOTING TABLE (Continued)

Data dropout (relating to gray scale)

LC-32GA3E
LC-37GA3E

Set PATTERN1 → PATTERN1 on the adjustment process menu
to "2". Is the gray scale pattern displayed correctly?

Set PATTERN1 → PATTERN3 on the adjustment process menu
to "1". Is the gray scale pattern displayed correctly?

Set PATTERN1 → PATTERN3 on the adjustment process menu
to "4". Is the test pattern displayed correctly at intervals of one
dot?

Set PATTERN1 → PATTERN3 on the adjustment process menu
to "5". Is the test pattern displayed correctly at intervals of one
dot?

Check the peripheral circuits of IC4602.

Is OSTEMP.AD on Page 1 of the process adjustment mode set at
255?

Is the harness connected correctly between the inverter GND
PWB and LCD control PWB?

Is the input voltage at pin (62) of IC2004 (microprocessor) 5V?

The thermistor on the inverter GND PWB is faulty.

YES

YES

YES

YES

Noise is caused to the moving picture with the QS drive on.

YES

YES

YES

NO

NO

NO

NO

NO

NO

NO

Check the connection between SC4651 and SC4652 and check
the peripheral circuits of IC4501.

Check IC4702, IC4902 and their peripheral circuits.

Check the line between IC4701 and IC4501.

Check the line between IC4901 and IC4501.

Check IC4701 and IC4901 and their peripheral circuits.

Connect the harness correctly or replace it.

Pin (62) of IC2004 (microprocessor) is faulty.

The backlight does not go on.

Is any of the fuses in the power supply unit blown?

NO

Is power supplied to the inverter PWB?

NO

Is the harness connected correctly between the PWBs (power
unit, inverter PWB, inverter GND PWB and LCD control PWB)?

Connect the harness correctly or replace it.

Set PATTERN1 → PATTERN3 on the adjustment process menu
to "1". Is the gray scale pattern displayed correctly?

Disconnect the FPC from SC4651 and SC4652. (To protect the
panel against damage)

Check the power supply voltage supplied to the panel (check at
SC4651 and SC4652).

NO

The whole screen is whitish (LCD power supply).

NO

YES

YES

YES

YES

YES

Check the inverter circuit located downstream from the blown

Check the connector and inverter circuit of each fluorescent lamp.

Is the control signal applied to pin (11) (OFL1) and pin (13)
(INV.OSC) of CN705 of the power supply unit?

Check the peripheral circuits of IC4501.

Check the video signal circuit.

YES

NO

47

LCD 2005 05 03

Date of Issue: 12th May 2005

Classification: White

LCD TELEVISION TECHNICAL BULLETIN

MODELS All

SYMPTOMDead or stuck in standby.

All Sharp LCD TV sets have a Lamp Error detection circuit which will return the LCD
TV to stand-by if a fault is detected, the fault is logged by the lamp error counter which
will render the LCD TV inoperative if it the error count reaches 5.

To enable fault finding the lamp error detection circuit is ignored when service mode is
activated. Service mode activation is detailed in the relevant service manual.

After the fault has been diagnosed and repaired the lamp error counter must be reset
to “0” before normal functionality is restored, again this is detailed in the relevant
service manual.

CAUSE Possible causes of this symptom are:

Page 1 of 1

• Inverter circuit failure (switching transistors)

• Lamp failure (no or low output)

• Poor or loose connectors, fuse holders (lamps or inverter board).

• Dry joints (power supply or inverter board).

• Trapped or chaffed cables to lamps.

• Power feed to lamp inverter circuit.

• Fault in error detection circuit

ACTION Repair the unit as necessary and reset the lamp counter.

Sharp Electronics (UK) Limited

Reference - MB 11 05 2005 - 1

White – Carry out as required

Yellow – Carry out as required and whenever the unit comes in for service

Red – Carry out on all units

Revision - 1